442321442 has 16 divisors (see below), whose sum is σ = 676795392. Its totient is φ = 216765360.

The previous prime is 442321417. The next prime is 442321447. The reversal of 442321442 is 244123244.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (442321447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10592 + ... + 31572.

It is an arithmetic number, because the mean of its divisors is an integer number (42299712).

Almost surely, 2^442321442 is an apocalyptic number.

442321442 is a deficient number, since it is larger than the sum of its proper divisors (234473950).

442321442 is a wasteful number, since it uses less digits than its factorization.

442321442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21193.

The product of its digits is 6144, while the sum is 26.

The square root of 442321442 is about 21031.4393706185. The cubic root of 442321442 is about 761.9257728805.

Adding to 442321442 its reverse (244123244), we get a palindrome (686444686).

The spelling of 442321442 in words is "four hundred forty-two million, three hundred twenty-one thousand, four hundred forty-two".